Substitution
Everything on SkillVeris tagged Substitution — collected across the glossary, study notes, blog, and cheat sheets.
5 resources across 2 libraries
Study Notes(4)
sed Substitution Basics
A practical guide to the s command — sed's find-and-replace engine — covering delimiters, flags, backreferences, and the ampersand.
Command Substitution in Depth
Understand how $(...) captures command output as a string, why it's preferred over backticks, and the quoting rules that prevent word-splitting bugs.
Process Substitution
Learn how Bash's <(...) and >(...) process substitution let commands read from or write to another command's output as if it were a file.
Liskov Substitution and Interface Segregation
Understand why subtypes must honor their base type's contract and why fat interfaces should be split into focused ones.